Ar-15 Sd Mod 4 9mm Upper Receiver M-Lok Complete - Sd Mod 4 9mm Upper Receiver 16.1in M-Lok Complete Black
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544.45
$3,718.00
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Ar-15 Sd Mod 4 9mm Upper Receiver M-Lok Complete - Sd Mod 4 9mm Upper Receiver 16.1in M-Lok Complete Black, The Stern Defense SD Mod 4 9mm Upper Receiver is a complete, ready to go, upper receiver solution for those looking to spend less time building and more time shooting. The 16.1 inch, 1-10 twist, Melonited barrel, is free float in a 12in M-LOK handguard attached to a 7075-T6 forged aluminum receiver. 16.1in barrel 15in M-LOK Free Float handguard Complete assembly with 9mm bolt and charging handle A 1/2-36 muzzle thread pitch SD BU9 9mm Bolt Cartridge: 9mm Nato Included in the upper receiver is charging handle and the Stern Defense 9mm Bolt which is compatible with both Glock and Colt SMG magazines, has a Melonite finish, and is works in c Mfg: Stern Defense